SU 5350 sits atop 5486, indicating that 5350 is the more recent of the features. The rubble in the space North of the SU may have been positioned by a collapse from wither room 9 or room 8, or possibly positioned in the space by previous excavators hoping to keep 5350 from collapsing. The ashlar block may be associated with 5487 and 5488 (ashlars) and represents an earlier monumentalization of the area before the earliest cement phase and both faces 5355 and 5320.